https://www.newyorker.com/magazine/2017/08/21/trumps-business-of-corruption/amp
Several news accounts have confirmed that Mueller has indeed begun to examine Trump’s real-estate deals and other business dealings, including some that have no obvious link to Russia. But this is hardly wayward. It would be impossible to gain a full understanding of the various points of contact between the Kremlin and the Trump campaign without scrutinizing many of the deals that Trump has made in the past decade. Trump-branded buildings in Toronto and the SoHo neighborhood of Manhattan were developed in association with people who have connections to the Kremlin. Other real-estate partners of the Trump Organization—in Brazil, India, Indonesia, and elsewhere—are now caught up in corruption probes, and, collectively, they suggest that the company had a pattern of working with partners who exploited their proximity to political power.